1111101210021 has 16 divisors (see below), whose sum is σ = 1659826870848. Its totient is φ = 655194816000.

The previous prime is 1111101210017. The next prime is 1111101210091. The reversal of 1111101210021 is 1200121011111.

It is not a de Polignac number, because 1111101210021 - 2² = 1111101210017 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1111101209979 and 1111101210006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111101210091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 454995180 + ... + 454997621.

It is an arithmetic number, because the mean of its divisors is an integer number (103739179428).

Almost surely, 2^{1111101210021} is an apocalyptic number.

1111101210021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1111101210021 is a deficient number, since it is larger than the sum of its proper divisors (548725660827).

1111101210021 is a wasteful number, since it uses less digits than its factorization.

1111101210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909992852.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1111101210021 its reverse (1200121011111), we get a palindrome (2311222221132).

The spelling of 1111101210021 in words is "one trillion, one hundred eleven billion, one hundred one million, two hundred ten thousand, twenty-one".